How do I add a third ATA controller to 4.8?

Martyn Hill sysadmin at
Mon Jan 12 01:20:11 PST 2004


I notice that the kernel config file you present is using the "old" device
ata lines - is the ATA controller a particularly old model?

If not, then the LINT kernel config file shows an alternative, viz

device    ata            # just one entry for all ata controllers, no need
to reference IRQs etc...
device    atadisk        # for your IDE disks
device    atapicd        # for your CD-ROM like devices

You should comment out the ata0/ata1 lines before adding the above (and
additionally, remove any "device wd*" lines in that section.)

Then rebuild your kernel.

Hope that helps.

Martyn Hill
Network Administrator
St James Independent School

----- Original Message -----
From: "Paul Hoffman" <phoffman at>
To: <freebsd-questions at FreeBSD.ORG>
Sent: Monday, January 12, 2004 5:13 AM
Subject: How do I add a third ATA controller to 4.8?

> Greetings again. I have a Dell 600SC that has three ATA controllers
> on the motherboard, and I'm running 4.8 quite happily on it. The
> GENERIC kernel has the following:
> device      ata0    at isa? port IO_WD1 irq 14
> device      ata1    at isa? port IO_WD2 irq 15
> Since I didn't know the irq used by the third controller (it's not
> listed in their documentation, of course!), I blithely tried adding:
> device      ata2    at isa? port IO_WD3
> However, when rebuilding this kernel, I get the following error:
> cc -c -O -pipe  -Wall -Wredundant-decls -Wnested-externs
> -Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline
> -Wcast-qual  -fformat-extensions -ansi  -nostdinc -I- -I. -I../..
> -I../../../include -I../../contrib/ipfilter  -D_KERNEL -include
> opt_global.h  -mpreferred-stack-boundary=2  ioconf.c
> ioconf.c:48: `IO_WD3' undeclared here (not in a function)
> ioconf.c:48: initializer element is not constant
> ioconf.c:48: (near initialization for `ata2_resources[1].u.longval')
> *** Error code 1
> So, what am I supposed to add to the kernel to add this third controller?
> --Paul Hoffman
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